I can't say I experienced any problems with the controls, and have you never played an FPS on PS2 before, Mo? D: Jesus.

Anyway sometimes you do get shot at while aiming, but overall I didn't have many problems. I spent a lot of time crawling around with my sniper rifle out taking people out from a distance and then switching to pistol when they ran at me, until later on in the game when I and my guns were powered up enough to just stick with the pistol for the most part (but used Rifle when it was more beneficial to snipe)